Chromium
Oxide Green pigment known as chrome oxide green. there have
numerous preparation of chrome oxide process. but basically has three kinds: by
chromium hydroxide preparation technique of chrome oxide green, ammonium
sulfate sodium chromate salt decomposition method, Chromium Oxide Green
direct decomposition method.
The thermal decomposition of ammonium sulfate
sodium chromate salt, is the United states of america, Britain, Germany as well
as other nations and also the basic techniques of production of chrome oxide
green, has turn out to be the largest output in preparing chrome oxide green,
very best high quality, most varieties of production methods. its benefit is
relatively simple production procedure, cost lower than that of chromic acid decomposition
technique, wide adaptability, started within the rotating mass production. the
production process of basic does not produce harmful gas. chromic acid
decomposition technique quick in current years . using the consciousness of Chromium Oxide Green.
chromic anhydride in 1999 produced chrome oxide production twice about
chromium.
The physical properties of chrome oxide green.
chrome oxide green with metallic luster. colour is light green to dark green.
magnetism,covering power is powerful, higher temperature resistant, weather
resistant, insolube in water, in the atmosphere is stable. excellent
weatherability, meet thermal stability, melting point 2265 degrees celsius, the
boiling point of 3000 degrees celsius, is of high quality refractory materials.
chrome oxide green chemistry, insoluble in water, acid and organic solvents,
slightly soluble in concentrated sodium hydroxide answer, soluble in hot or
boiling sodium bromate answer of sulfur phosphorus mixed acid, great paint
quality and fastness.
Chromium
Oxide Green may be used for smelting metal chromium and
chromium for making stainless steel, auto components , tools, tapes and videos.
chromium cross the rust on metal at the same time, strong and stunning. used
for enamel, glass industry,developing supplies. particularly for the production
of ceramic pigment, vibrant colour products.
At house and abroad, because the global financial
recovery, building supplies, coating paint, plastic, ink as well as other
industries in the fast development, the demand of inorganic pigment also
increase rapidly. with the fast improvement of coating business, as one from
the main raw material for inorganic pigment obtained fast improvement. improve
the degree of environment safety of inorganic pigment, using has got
extensively recognized industry enterprises, environmental protection inorganic
pigment development direction from the trend from the times.
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